DYNAMIC KEYBOARD SYSTEMS & IMPROVING TYPING PERFORMANCE

动态键盘系统

• 批准号: 2866875
• 负责人: JAMES E SCHROEDER
• 金额: $ 9.97万
• 依托单位: APPLIED HUMAN FACTORS, INC.
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2866875
• 关键词: assistive device /technology; biomedical equipment development; computer program /software; computer system design /evaluation; computer system hardware; human subject; work site

Recent advances in computer technology (i.e., the dramatic increase in speed and memory) and assistive technology software (i.e., existing On- screen keyboard systems) provide the foundation for an innovative approach t assisted typing. In the proposed effort, this new approach will be exploited and tested. "Dynamic Keyboards" are hypothesized to increase typing speed and accuracy in physically, mentally, and learning disabled users because they dynamically adapt an on-screen keyboard to the current typing context. Using "letter prediction", Dynamic Keyboards modify a displayed keyboard so that only those keys that are highly probable in that context are displayed or highlighted. Hypothesized sources of performance enhancement are due to 1) reduced visual scanning time, 2) less complex displays, 3) reduced probability of selecting an incorrect key, and 4) decreased key selection time for persons using scanning keyboards. In the proposed work, different approaches to Dynamic Keyboards will be identified, created, and evaluated in a user test involving the target user population. Subjective evaluations will be solicited and objective measures of typing performance under different experimental conditions will be collected and analyzed to demonstrate feasibility and potential. PROPOSED COMMERCIAL APPLICATIONS: If the proposed research demonstrates benefits of Dynamic Keyboards for improving typing speed and accuracy for persons who have difficulty using standard keyboards,the resulting software will be incorporated in an existing product and marketed to end users and organizations that provide services for the end users.

计算机技术的最新进展（即，速度和存储器的急剧增加）和辅助技术软件（即，现有的屏幕键盘系统）为辅助打字的创新方法提供了基础。 在拟议的努力中，将利用和测试这一新方法。“动态键盘”被假设为增加身体上、精神上和学习上有障碍的用户的打字速度和准确性，因为他们动态地使屏幕上的键盘适应当前的打字上下文。使用“字母预测”，动态键盘修改显示的键盘，以便仅显示或突出显示在该上下文中高度可能的那些键。 性能增强的假设来源是由于1）减少视觉扫描时间，2）不太复杂的显示器，3）减少选择错误键的概率，以及4）减少使用扫描键盘的人的键选择时间。 在拟议的工作中，不同的方法来动态键盘将被确定，创建，并在用户测试中涉及目标用户群进行评估。 将征求主观评价，并收集和分析在不同实验条件下的打字性能的客观措施，以证明可行性和潜力。拟议的商业应用：如果拟议的研究证明动态键盘可以提高使用标准键盘有困难的人的打字速度和准确性，那么所产生的软件将被纳入现有产品中，并向最终用户和为最终用户提供服务的组织销售。